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Adjective: perpendicular  ,pur-pun'di-kyû-lu(r)
  1. So steep as to be nearly vertical
    "the great perpendicular face of the cliff"
  2. Intersecting at or forming right angles
    "the axes are perpendicular to each other"
  3. At right angles to the plane of the horizon or a base line
    "measure the perpendicular height";
    - vertical
Noun: perpendicular  ,pur-pun'di-kyû-lu(r)
  1. A straight line at right angles to another line
  2. A Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centred (Tudor) arch and fan vaulting
    - perpendicular style, English-Gothic, English-Gothic architecture
  3. A cord from which a metal weight is suspended pointing directly to the earth's centre of gravity; used to determine the vertical from a given point
    - plumb line
  4. An extremely steep face

Derived forms: perpendiculars

See also: normal, orientation, orthogonal, plumb, rectangular, right, steep, straight, unsloped, upended, upright

Type of: cord, face, Gothic, Gothic architecture, straight line

Antonym: oblique, parallel

Encyclopedia: Perpendicular